EP0268134A2 - Joint de culasse - Google Patents

Joint de culasse Download PDF

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Publication number
EP0268134A2
EP0268134A2 EP87116133A EP87116133A EP0268134A2 EP 0268134 A2 EP0268134 A2 EP 0268134A2 EP 87116133 A EP87116133 A EP 87116133A EP 87116133 A EP87116133 A EP 87116133A EP 0268134 A2 EP0268134 A2 EP 0268134A2
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
cylinder head
chamber passage
height
shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87116133A
Other languages
German (de)
English (en)
Other versions
EP0268134B1 (fr
EP0268134A3 (en
Inventor
Hugo Dipl.-Ing. Eicher (Fh)
Alfred Hirschvogel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sigri GmbH
Original Assignee
Sigri GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sigri GmbH filed Critical Sigri GmbH
Publication of EP0268134A2 publication Critical patent/EP0268134A2/fr
Publication of EP0268134A3 publication Critical patent/EP0268134A3/de
Application granted granted Critical
Publication of EP0268134B1 publication Critical patent/EP0268134B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F11/00—Arrangements of sealings in combustion engines 
    • F02F11/002—Arrangements of sealings in combustion engines  involving cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
    • F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
    • F16J15/122—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement generally parallel to the surfaces
    • F16J15/123—Details relating to the edges of the packing

Definitions

  • Cylinder head gasket for an internal combustion engine with at least one opening forming a combustion chamber passage consisting of a metal sheet which is provided with at least one corrugated embossment concentrically surrounding the combustion chamber and is covered on both sides with layers of graphite foil.
  • Cylinder head gaskets usually consist of a carrier plate that is coated on both sides with elastomer-containing asbestos fiber layers.
  • the seal has several openings in the form of one or more combustion chamber passages and passages for oil and cooling water. At least the edges of the seal facing the combustion chamber passages are enclosed by a special sheet metal frame with a U-shaped cross section due to the high thermal and erosive impingement of the seal material.
  • the stresses on the seals increased, which in particular the elastomeric component of the sealing material can only cope with to a limited extent.
  • the asbestos component is controversial because of the health risks associated with its processing, so that cylinder head gaskets are developed that contain temperature-resistant materials that are harmless to health.
  • the temperature-resistant graphite foil which is elastic and resistant to aging, even at high temperatures, is obtained from graphite storage compounds that decompose at high temperatures. This creates concertina-like bloated structures that are rolled or pressed into flexible foils or laminates without the addition of binders.
  • the foils are glued to metal sheets or reinforced with inserts in the form of perforated or spit sheets or metal mesh (DE-OS 25 18 351).
  • the edge of the graphite laminate body or film facing the combustion chamber passages is gripped by U-shaped sheet metal holders.
  • a disadvantage of these seals is the reduced surface pressure, especially in the area of the combustion chamber passages, and the comparatively great effort that is required for the shielding of the seal by the special sheet metal frames.
  • To increase the surface pressure it is known to provide the supporting metal sheet of the seal with embossments which concentrically surround the combustion chamber passage, and fill annular recesses or grooves formed with flexible graphite (US Pat. No. 4,397,472).
  • the flexible graphite compressed in the annular groove forms a sealing zone that is intended to prevent the penetration of combustion gases or coolants into the seal.
  • the sealing edge against the combustion chamber passage is covered with a sheet metal socket with a U-shaped cross section, the legs of which shield the embossed part of the seal.
  • a flat gasket is known in which the metal sheet is drawn by stamping over part of the graphite foil edge (DE-OS 33 09 338). The low degree of coverage is not suitable as an effective shielding of the film.
  • the invention is therefore based on the object of creating a cylinder head gasket which has a long service life even without special sheet metal frames which shield the gasket against the passage through the combustion chamber.
  • the object is achieved in that the metal sheet is bent into a U-shape at the combustion chamber passage and shields the seal against the combustion chamber passage.
  • the height of the U-shaped bend is greater than the height of the wave-shaped embossing, it is expediently equal to the height of the seal.
  • the metal sheet is preferably provided with at least two concentric wave-shaped embossments, the height of which is inversely proportional to its distance from the combustion chamber passage. Under the terms "height of embossing" or “height the bend "is understood to mean the distance between the maxima of the curve defining a main section of the sheet from the plane of the undeformed sheet.
  • the sheet contains several embossments n 1, n 2, n 3, ...., and if the height of the bend is h0, the following applies to the height of the embossings h0>h1>h2> h3, ...., if the distance between the embossments and the passage through the combustion chamber increases with increasing coefficient
  • the mutual spacing of the embossments or waves is generally constant, preferably it is two to three times that Sheet thickness.
  • a first advantage of the cylinder head gasket according to the invention is that the graphite portion of the gasket is protected against erosive and oxidizing substances emerging from the combustion chamber passage without an additional sheet metal socket. This function is performed by the reinforcement plate that is present in every seal.
  • annular zones with high surface pressure are formed when the sealing forces are applied.
  • the sheet is covered with graphite foil over its entire extent, since the height of the U-shaped bend is greater than the height of the wave-shaped embossments.
  • the seal In the zones of increased surface pressure, the seal has a high cross-sectional tightness and a larger springback, overall the contouring prevents the graphite foils from being squeezed out.
  • the cylinder head gasket shown in the drawing is designed for internal combustion engines with several cylinders.
  • the seal 1 consists essentially of a plate-shaped body 2 which is provided with openings 3 which are aligned with the cylinders of the machine. Openings or holes 4 are provided as passages for oil, cooling water and els screw holes.
  • the plate body 2 is formed from a metal sheet 5 and layers of graphite foils 6, 7, which enclose the sheet 5 on both sides (FIG. 2).
  • the compressible graphite layers whose bulk density is 1.0 to 1.6 g / cm3, are glued to the sheet. In general, the thickness of the sheet is about 0.2 to 2.0 mm and the thickness of the graphite layers is 0.2 to 1.0 mm.
  • the edge 8 of the metal sheet 5 bordering the combustion chamber passage 3 is flanged and delimits the seal from the combustion chamber passage.
  • the plate 5 is provided with wave-shaped embossments 9 or annular upsets 11, the height of which is smaller than the height of the bent edge 8.
  • the embossments 9 or upsets 11 are viewed from the edge of the bore always smaller and thus the respective thickness 13 of the graphite layers covering the wave crests greater.
  • the embossments 9 and upsets 11 enclose the combustion chamber passage (not shown) and form ring zones 10 of increased surface pressure, the surface pressure decreasing with the distance from the combustion chamber throughput.
  • FIG. 3 another embodiment of the cylinder head gasket is shown in cross section.
  • the sheet 5 has at the edges 8 ⁇ thickened portions 11 formed by upsetting.
  • the height of the first thickening shielding the seal against the combustion chamber passage is equal to the thickness of the seal in the functional state.
  • the annular zones 12 of increased surface pressure extend symmetrically on the upper and lower sealing surfaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gasket Seals (AREA)
EP87116133A 1986-11-15 1987-11-03 Joint de culasse Expired - Lifetime EP0268134B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863639160 DE3639160A1 (de) 1986-11-15 1986-11-15 Zylinderkopfdichtung
DE3639160 1986-11-15

Publications (3)

Publication Number Publication Date
EP0268134A2 true EP0268134A2 (fr) 1988-05-25
EP0268134A3 EP0268134A3 (en) 1989-04-12
EP0268134B1 EP0268134B1 (fr) 1991-05-08

Family

ID=6314085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116133A Expired - Lifetime EP0268134B1 (fr) 1986-11-15 1987-11-03 Joint de culasse

Country Status (3)

Country Link
EP (1) EP0268134B1 (fr)
DE (2) DE3639160A1 (fr)
ES (1) ES2018453B3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5421594A (en) * 1991-02-14 1995-06-06 Marine & Petroleum Mfg., Inc. Gasket
WO1995022706A1 (fr) * 1994-02-21 1995-08-24 Eagle-Picher Industries Gmbh Joint, en particulier joint de culasse et son procede de fabrication
US5785322A (en) * 1993-06-30 1998-07-28 Acadia Elastomers Gasket for flange connections
WO1999045298A1 (fr) * 1998-03-07 1999-09-10 Alfred Jung Systeme d'etancheite estampe destine a un raccord a brides plat
US6092811A (en) * 1996-04-30 2000-07-25 Jamco Products, Llc Hybrid gasket
EP1679457A1 (fr) * 2000-06-15 2006-07-12 Reinz-Dichtungs-Gmbh Joint plat et son procédé de fabrication
WO2007082887A1 (fr) * 2006-01-17 2007-07-26 Alfred Jung Dispostif d’étanchéité

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011108441A1 (de) * 2011-07-23 2013-01-24 Volkswagen Aktiengesellschaft Dichtungselement

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1782087A (en) * 1926-05-07 1930-11-18 Mccord Radiator & Mfg Co Gasket
GB931710A (en) * 1959-05-22 1963-07-17 Corp Packing & Sheet Metal Com Improvements in or relating to gaskets
DE1919873A1 (de) * 1968-04-26 1969-11-20 Hagmann Foster Marion Dichtung
FR2424455A1 (fr) * 1978-04-27 1979-11-23 Goetze Ag Joint de culasse metallique pour moteur a combustion interne
FR2512155A1 (fr) * 1981-08-28 1983-03-04 Lechler Elring Dichtungswerke Joint d'etancheite plat et son procede de fabrication
US4397472A (en) * 1982-11-12 1983-08-09 Felt Products Mfg. Co. Cylinder head gasket with expanded graphite filler
DE3217329A1 (de) * 1982-05-08 1983-11-17 Elring Dichtungswerke Gmbh, 7012 Fellbach Zylinderkopfdichtung fuer hubkolben-brennkraftmaschinen
DE3223003A1 (de) * 1982-06-19 1983-12-22 Sigri Elektrographit Gmbh, 8901 Meitingen Zylinderkopfdichtung fuer verbrennungsmaschine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1782087A (en) * 1926-05-07 1930-11-18 Mccord Radiator & Mfg Co Gasket
GB931710A (en) * 1959-05-22 1963-07-17 Corp Packing & Sheet Metal Com Improvements in or relating to gaskets
DE1919873A1 (de) * 1968-04-26 1969-11-20 Hagmann Foster Marion Dichtung
FR2424455A1 (fr) * 1978-04-27 1979-11-23 Goetze Ag Joint de culasse metallique pour moteur a combustion interne
FR2512155A1 (fr) * 1981-08-28 1983-03-04 Lechler Elring Dichtungswerke Joint d'etancheite plat et son procede de fabrication
DE3217329A1 (de) * 1982-05-08 1983-11-17 Elring Dichtungswerke Gmbh, 7012 Fellbach Zylinderkopfdichtung fuer hubkolben-brennkraftmaschinen
DE3223003A1 (de) * 1982-06-19 1983-12-22 Sigri Elektrographit Gmbh, 8901 Meitingen Zylinderkopfdichtung fuer verbrennungsmaschine
US4397472A (en) * 1982-11-12 1983-08-09 Felt Products Mfg. Co. Cylinder head gasket with expanded graphite filler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MTZ, 48 (1987)3, Die Zylinderkopfdichtung in der Patentliteratur *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5421594A (en) * 1991-02-14 1995-06-06 Marine & Petroleum Mfg., Inc. Gasket
US5785322A (en) * 1993-06-30 1998-07-28 Acadia Elastomers Gasket for flange connections
WO1995022706A1 (fr) * 1994-02-21 1995-08-24 Eagle-Picher Industries Gmbh Joint, en particulier joint de culasse et son procede de fabrication
US6092811A (en) * 1996-04-30 2000-07-25 Jamco Products, Llc Hybrid gasket
WO1999045298A1 (fr) * 1998-03-07 1999-09-10 Alfred Jung Systeme d'etancheite estampe destine a un raccord a brides plat
US6457726B1 (en) 1998-03-07 2002-10-01 Alfred Jung Stamped sealing arrangement for a flat flanged joint
EP1679457A1 (fr) * 2000-06-15 2006-07-12 Reinz-Dichtungs-Gmbh Joint plat et son procédé de fabrication
EP2020540A1 (fr) * 2000-06-15 2009-02-04 Reinz-Dichtungs-Gmbh Joint plat et son procédé de fabrication
WO2007082887A1 (fr) * 2006-01-17 2007-07-26 Alfred Jung Dispostif d’étanchéité
US8672330B2 (en) 2006-01-17 2014-03-18 Alfred Jung Sealing arrangement

Also Published As

Publication number Publication date
EP0268134B1 (fr) 1991-05-08
ES2018453B3 (es) 1991-12-01
EP0268134A3 (en) 1989-04-12
DE3639160A1 (de) 1988-05-26
ES2018453A4 (es) 1991-04-16
DE3769926D1 (de) 1991-06-13

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